Research and development of deformation desistance model for phase transformation process of hot-rolled strips
LI Wei-gang1,2，FENG Ning1，WANG Shen-de3，YAN Bao-kang1
（1. School of Information Science and Engineering， Wuhan University of Science and Technology， Wuhan 430081，Hubei， China 2. Hubei Province Key Laboratory of Systems Science in Metallurgical Process， Wuhan University of Science and Technology， Wuhan 430081， Hubei， China 3. Technical Center， Hunan Hualing Lianyuan Steel Co.， Ltd.， Loudi 417009， Hunan， China）
Abstract：For the hot-rolled strip with phase transformation process existing in finishing rolling stage， its variation laws of deformation resistance with rolling temperature are significantly different from that of conventional austenitic rolled strip， which makes the prediction error by the traditional deformation resistance model relative large and affects the rolling stability seriously. Therefore， a new model of deformation resistance during hot rolling phase transformation process was developed. A new phase transformation trend term that was a quadratic polynomial function of rolling temperature was added on the basis of the original deformation resistance model， and the undetermined parameters of different steel grade are fine optimized according to the steel grade classification. This model is applied to online calculation for the prediction of deformation resistance in Lianyuan steel CSP production line. The practical application shows that the prediction accuracy of deformation resistance and roll force is significantly improved after using the new built model. Then the proportion of predicted roll force within the prediction error of 12% increased from 83.3% to 96.7%， which meet the rolling stability requirements of these hot rolled strips with phase transformation during finishing rolling process.
收稿日期: 2016-10-17
出版日期: 2017-06-09
引用本文:
李维刚，冯 宁，王慎德，严保康. 热轧相变过程变形抗力模型研究与开发[J]. 钢铁, 2017, 52(6): 61-66.
LI Wei-gang，，FENG Ning，WANG Shen-de，YAN Bao-kang. Research and development of deformation desistance model for phase transformation process of hot-rolled strips. Iron and Steel, 2017, 52(6): 61-66.
2017, Vol. 52 
